Cities in Idaho by median age, 2024

Eagle, ID had the highest median age of 27 cities in 2024, at 47.6 years. Rexburg, ID had the lowest, at 21 years. The median was 35.1 years and the figure for Idaho was 37.3 years. Source: the U.S. Census Bureau.

Highest47.6Eagle, ID

Lowest21Rexburg, ID

Median35.127 cities

Idaho37.3History

All cities, 2024

years. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). Retrieved 2026-10-12.

Full ranking

Rank	Cities	2024 years	Change on 2023
1	Eagle, ID	47.6	+1.5
2	Garden City, ID	42.3	-1.7
3	Hayden, ID	42.1	-1
4	Sandpoint, ID	41.5	0
5	Hailey, ID	41.3	-1.1
6	Star, ID	40.3	-0.3
7	Coeur d'Alene, ID	40.1	0
8	Lewiston, ID	39.8	+0.1
9	Boise City, ID	38.6	+0.4
10	Meridian, ID	37.5	+0.1
11	Rathdrum, ID	37.1	+1.3
12	Middleton, ID	36.1	+1.8
13	Chubbuck, ID	35.9	+0.2
14	Twin Falls, ID	35.1	+1
15	Post Falls, ID	35	+0.4
16	Blackfoot, ID	34.7	-0.9
17	Nampa, ID	33.9	-0.2
18	Idaho Falls, ID	33.7	+0.2
19	Pocatello, ID	33.1	+0.2
20	Ammon, ID	32.9	+0.4
21	Kuna, ID	31.8	-0.1
22	Mountain Home, ID	31.7	+0.3
23	Caldwell, ID	31.5	+0.7
24	Burley, ID	31.2	+2
25	Jerome, ID	30.9	-0.1
26	Moscow, ID	25.7	+0.4
27	Rexburg, ID	21	0

Other periods

2024
2023
2022
2021

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span. Canada: on 1 July, Statistics Canada population estimates.

Every value in the ranking comes from the same publisher and the same period, so the cities are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more) (Cities in Idaho by median age, 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat

MLA 9

American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more), Cities in Idaho by median age, 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Invokely, https://invokely.ai/rankings/median-age/idaho-cities. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). Cities in Idaho by median age, 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Also distributed by Invokely, https://invokely.ai/rankings/median-age/idaho-cities.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more), Cities in Idaho by median age, 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat, via Invokely: https://invokely.ai/rankings/median-age/idaho-cities (Accessed: 12 October 2026).

BibTeX

@misc{census_cities_in_idaho_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more): Cities in Idaho by median age, 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/median-age/idaho-cities. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more): Cities in Idaho by median age, 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat
L2  - https://invokely.ai/rankings/median-age/idaho-cities
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age/idaho-cities.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-12.
ER  -

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Questions

Which city has the highest median age?

Eagle, ID, with 47.6 years in 2024, according to the U.S. Census Bureau.

Which city has the lowest median age?

Rexburg, ID, with 21 years in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population, US cities (incorporated places of 10,000 or more). Retrieved 2026-10-12.